Note: previous versions of this specification recommended a maximum of five redirections. April 2015. So basically IIS unable to server requests, for a totally different reason :) share|improve this answer answered Feb 22 '13 at 20:58 Adnan 211 add a comment| Not the answer you're looking for? Retrieved October 24, 2009. ^ "Enum HttpStatus". http://orgias.org/http-status/http-status-code-403-error.html

Must not provide all types on information, JUST ONE SPECIFIC TYPE! ;) –Ian Grainger Jul 3 '14 at 8:11 1 Such strange activities of Stack overflow is behind the scene of us. Retrieved 16 October 2015. ^ alex. "What is the correct HTTP status code to send when a site is down for maintenance?". Internet Engineering Task Force. This response is only cacheable if indicated by a Cache-Control or Expires header field.

503 Error Iis

It is telling to client that response has not been modified. Stack Overflow is strange. These response codes are applicable to any request method.[57] 500 Internal Server Error A generic error message, given when an unexpected condition was encountered and no more specific message is suitable.[58] 501 Not Implemented The server either does not recognize the request method, or it lacks the ability to fulfill the request. For example, if the client asked for a part of the file that lies beyond the end of the file.[47] Called "Requested Range Not Satisfiable" previously.[48] 417 Expectation Failed The server cannot meet the requirements of the Expect request-header field.[49] 418 I'm a teapot (RFC 2324) This code was defined in 1998 as one of the traditional IETF April Fools' jokes, in RFC 2324, Hyper Text Coffee Pot Control Protocol, and is not expected to be implemented by actual HTTP servers.

User agents should display any included entity to the user.[31] 400 Bad Request The server cannot or will not process the request due to an apparent client error (e.g., malformed request syntax, too large size, invalid request message framing, or deceptive request routing).[32] 401 Unauthorized (RFC 7235) Similar to 403 Forbidden, but specifically for use when authentication is required and has failed or has not yet been provided. This most common cause for this error is server misconfiguration (e.g. Clients with link editing capabilities ought to automatically re-link references to the Request-URI to one or more of the new references returned by the server, where possible. Http 502 Does the server configuration have the correct document root location?

Generally, this is a temporary state.[60] 504 Gateway Timeout The server was acting as a gateway or proxy and did not receive a timely response from the upstream server.[61] 505 HTTP Version Not Supported The server does not support the HTTP protocol version used in the request.[62] 506 Variant Also Negotiates (RFC 2295) Transparent content negotiation for the request results in a circular reference.[63] 507 Insufficient Storage (WebDAV; RFC 4918) The server is unable to store the representation needed to complete the request.[15] 508 Loop Detected (WebDAV; RFC 5842) The server detected an infinite loop while processing the request (sent in lieu of 208 Already Reported). 510 Not Extended (RFC 2774) Further extensions to the request are required for the server to fulfill it.[64] 511 Network Authentication Required (RFC 6585) The client needs to authenticate to gain network access. How To Fix Http Error 503. The Service Is Unavailable The response MUST include the following header fields: - Date, unless its omission is required by section 14.18.1 If a clockless origin server obeys these rules, and proxies and clients add their own Date to any response received without one (as already specified by [RFC 2068], section 14.19), caches will operate correctly. - ETag and/or Content-Location, if the header would have been sent in a 200 response to the same request - Expires, Cache-Control, and/or Vary, if the field-value might differ from that sent in any previous response for the same variant If the conditional GET used a strong cache validator (see section 13.3.3), the response SHOULD NOT include other entity-headers. Its purpose is to allow a server to accept a request for some other process (perhaps a batch-oriented process that is only run once per day) without requiring that the user agent's connection to the server persist until the process is completed. Continue Reading Up Next Up Next Article Is Facebook Down Right Now...

Http Error 503 Service Unavailable

Its purpose is to allow a server to accept a request for some other process (perhaps a batch-oriented process that is only run once per day) without requiring that the user agent's connection to the server persist until the process is completed. Since the 503 Service Unavailable error is a common error message on very popular websites when a huge increase in traffic by visitors (that's you!) is overwhelming the servers, simply waiting it out is often your best bet.Frankly, this is the most likely "fix" for a 503 error. 503 Error Iis Retrieved 16 October 2015. ^ Delta encoding in HTTP. Http 504 https://tools.ietf.org/html/rfc2774.

This condition is expected to be considered permanent. this content The request MUST have included a Range header field (section 14.35) indicating the desired range, and MAY have included an If-Range header field (section 14.27) to make the request conditional. If the request already included Authorization credentials, then the 401 response indicates that authorization has been refused for those credentials. Intended to prevent "the 'lost update' problem, where a client GETs a resource's state, modifies it, and PUTs it back to the server, when meanwhile a third party has modified the state on the server, leading to a conflict."[54] 429 Too Many Requests (RFC 6585) The user has sent too many requests in a given amount of time. 503 Service Unavailable Fix

Retrieved 16 October 2015. ^ "407". Oracle. Anyway, it is my favorite site for the genius programmer in this site. –Abdus Sattar Bhuiyan Oct 1 '14 at 5:09 add a comment| 4 Answers 4 active oldest votes up vote 58 down vote accepted Your web pages are served by an application pool. weblink Often the result of too much data being encoded as a query-string of a GET request, in which case it should be converted to a POST request.[45] Called "Request-URI Too Long" previously.[46] 415 Unsupported Media Type The request entity has a media type which the server or resource does not support.

Join them; it only takes a minute: Sign up What possibilities can cause “Service Unavailable 503” error? [closed] up vote 41 down vote favorite 10 we have a asp.net MVC application deployed to a server, and but when there is too many request to the server, the client will just get a "503 service unavailable" error. Http Code 302 The client MAY repeat the request if it adds a valid Content-Length header field containing the length of the message-body in the request message. 10.4.13 412 Precondition Failed The precondition given in one or more of the request-header fields evaluated to false when it was tested on the server. Retrieved August 30, 2016. ^ Stewart, Mark; djna. "Create request with POST, which response codes 200 or 201 and content".

General Troubleshooting Tips When using a web browser to test a web server, refresh the browser after making server changes Check server logs for more details about how the server is handling the requests.

Transparent Content Negotiation in HTTP. The entity format is specified by the media type given in the Content- Type header field. This typically occurs in the following situations: The network connection between the servers is poor The backend server that is fulfilling the request is too slow, due to poor performance The gateway or proxy server's timeout duration is too short Conclusion Now that you are familiar with the most common HTTP error codes, and common solutions to those codes, you should have a good basis for troubleshooting issues with your web servers or applications. Http Status Codes Cheat Sheet The server MAY close the connection to prevent the client from continuing the request.

This should be used when a resource has been intentionally removed and the resource should be purged. Our company also owns these other Web sites: A simple guide to software escrow. It's possible that your computer is having some kind of problem that's causing the 503 error but it's not likely. check over here Must subgroups sharing a common element be nested in each other?

https://tools.ietf.org/html/rfc1945. The set presented MAY be a subset or superset of the original version. For example, if versioning were being used and the entity being PUT included changes to a resource which conflict with those made by an earlier (third-party) request, the server might use the 409 response to indicate that it can't complete the request. So, client can continue to use same cached version of response. 305 Use Proxy This means requested response must be accessed by a proxy.

The temporary URI SHOULD be given by the Location field in the response. If the server has a preferred choice of representation, it SHOULD include the specific URI for that representation in the Location field; user agents MAY use the Location field value for automatic redirection. Try searching for #websitedown on Twitter, replacing website with the site name, as in #facebookdown or #youtubedown. Learn more → 10 How To Troubleshoot Common HTTP Error Codes Posted Oct 24, 2014 82.9k views FAQ Apache Nginx Introduction When accessing a web server or application, every HTTP request that is received by a server is responded to with an HTTP status code.

The 202 response is intentionally non-committal. Since HTTP/1.0 did not define any 1xx status codes, servers MUST NOT send a 1xx response to an HTTP/1.0 client except under experimental conditions. The entity returned with this response SHOULD include an indication of the request's current status and either a pointer to a status monitor or some estimate of when the user can expect the request to be fulfilled. 10.2.4 203 Non-Authoritative Information The returned metainformation in the entity-header is not the definitive set as available from the origin server, but is gathered from a local or a third-party copy. July 14, 2009.